[Scummvm-tracker] [ScummVM :: Bugs] #15030: LOOM EGA: font drop shadow changes over animation & unique drop shadows in certain scenes are not implemented

[ScummVM :: Bugs]

#15030: LOOM EGA: font drop shadow changes over animation & unique drop shadows in
certain scenes are not implemented
-------------------------+----------------------------
Reporter:  ATMcashpoint  |       Owner:  (none)
    Type:  defect        |      Status:  new
Priority:  normal        |   Component:  Engine: SCUMM
 Version:                |  Resolution:
Keywords:  fonts         |        Game:  Loom
-------------------------+----------------------------
Description changed by ATMcashpoint:

Old description:

> In the EGA version of LOOM on the original interpreter, when text appears
> above the black part of the screen, many scenes have uniquely coded drop
> shadows around the fonts, none of which are implemented in ScummVM.
>
> Sometimes this takes the form of a reversed shadow, which generally has
> two pixels, one up and one left, where the regular drop shadow has three
> (down, right, and diagonally down-right).
>
> Whether the reverse drop shadows are present can depend on which screen
> the game is currently on, which puzzles have been solved, what character
> is speaking, and even what direction the player entered the screen from.
>
> However, it also seems that overall, costume animations playing below
> text cause the individual pixels of any text right around them to change
> their drop shadows.
>
> Generally, in such instances, regular three-pixel drop shadows switch to
> having only one pixel (diagonally down-right), while the reverse drop
> shadows with two pixels (up & left) now have the lowest vertical pixel of
> leftward shadows omitted, or the only leftward pixel omitted if there's
> just one.
>
> It's also possible for drop shadows to be redrawn when a room object
> under them is redrawn, though I've only found one screen that does that,
> and it's a special case.
>
> Here's a list of rooms with notable issues. This list may not be
> exhaustive.
>
> Loom Chamber (room 9): has reverse shadows, but only after Hetchel
> hatches from the egg
>
> Waterspout (room 13): This room is an extremely special case. Only a few
> lines of dialogue are affected here, and only a couple of pixels in some
> words are changed.
>
> When Bobbin says "Don't want to get any closer" there's a shadow pixel
> missing below the start of the D in "Don't", and one missing below the
> start of the T in "to". When the lightning flashes on the right of the
> waterspout (a room object rather than a costume), two other pixels
> disappear from the word "get", one from below the left side of the
> descender in the G and one from the top of the T.
>
> If Bobbin says "That thread is too high for me! Guess I need more
> experience." there's a shadow pixel missing below the start of the G in
> "Guess".
>
> When Bobbin says "Whew! Listen to that twisty wind!", when the lightning
> flashes on the right of the waterspout, a pixel disappears from the lower
> right end of the T in "that", as does one at the lower left end of the T
> in "twisty". These missing pixels are slightly higher than the ones in
> the other lines.
>
> Crystalgard Graveyard (room 17): has reverse shadows
>
> Forest (room 23): has reverse shadows for the Shepherds' dialogue, but
> not for Bobbin's dialogue
>
> Pasture (room 24): has reverse shadows for the Shepherd's dialogue, and
> sometimes for Bobbin's dialogue depending on where he is on screen and
> where he entered from. If Bobbin entered from the forest on the right,
> then he'll have reverse shadows only while standing to the right of the
> fence; if Bobbin entered from Fleece's hut, he'll have reverse shadows
> only while standing to the left of the fence.
>
> Forge Sword Room (room 41): lines spoken by Mandible, the Foreman, and
> Edgewise have reverse shadows, but not Bobbin
>
> Crystalgard Shattered Graveyard (room 49): regular shadows until Goodmold
> dies, then adds reverse shadows. The reverse shadows don't appear if you
> skip the cutscene of Goodmold's death before it cuts away to the Great
> Scythe, and they go away if you leave and re-enter after his death.
>
> Loom Chamber, torn open (room 51): regular shadows except for Chaos'
> dialogue as Bobbin exits, which has reverse shadows
>
> I've included a ZIP file of screenshots that illustrate this behavior in
> the original interpreter.

New description:

 In the EGA version of LOOM on the original interpreter, when text appears
 above the black part of the screen, many scenes have uniquely coded drop
 shadows around the fonts, none of which are implemented in ScummVM.

 Sometimes this takes the form of a reversed shadow, which generally has
 two pixels, one up and one left, where the regular drop shadow has three
 (down, right, and diagonally down-right).

 Whether the reverse drop shadows are present can depend on which screen
 the game is currently on, which puzzles have been solved, what character
 is speaking, and even what direction the player entered the screen from.

 However, it also seems that overall, costume animations playing below text
 cause the individual pixels of any text right around them to change their
 drop shadows.

 Generally, in such instances, regular three-pixel drop shadows switch to
 having only one pixel (diagonally down-right), while the reverse drop
 shadows with two pixels (up & left) now have the lowest vertical pixel of
 leftward shadows omitted, or the only leftward pixel omitted if there's
 just one.

 It's also possible for drop shadows to be redrawn when a room object under
 them is redrawn, though I've only found one screen that does that, and
 it's a special case.

 Here's a list of rooms with notable issues. This list may not be
 exhaustive.

 Loom Chamber (room 9): has reverse shadows, but only after Hetchel hatches
 from the egg. Note that the reverse shadows don't appear if you skip the
 cutscene of Hetchel emerging from the egg before it first cuts to her
 close-up.

 Waterspout (room 13): This room is an extremely special case. Only a few
 lines of dialogue are affected here, and only a couple of pixels in some
 words are changed.

 When Bobbin says "Don't want to get any closer" there's a shadow pixel
 missing below the start of the D in "Don't", and one missing below the
 start of the T in "to". When the lightning flashes on the right of the
 waterspout (a room object rather than a costume), two other pixels
 disappear from the word "get", one from below the left side of the
 descender in the G and one from the top of the T.

 If Bobbin says "That thread is too high for me! Guess I need more
 experience." there's a shadow pixel missing below the start of the G in
 "Guess".

 When Bobbin says "Whew! Listen to that twisty wind!", when the lightning
 flashes on the right of the waterspout, a pixel disappears from the lower
 right end of the T in "that", as does one at the lower left end of the T
 in "twisty". These missing pixels are slightly higher than the ones in the
 other lines.

 Crystalgard Graveyard (room 17): has reverse shadows

 Forest (room 23): has reverse shadows for the Shepherds' dialogue, but not
 for Bobbin's dialogue

 Pasture (room 24): has reverse shadows for the Shepherd's dialogue, and
 sometimes for Bobbin's dialogue depending on where he is on screen and
 where he entered from. If Bobbin entered from the forest on the right,
 then he'll have reverse shadows only while standing to the right of the
 fence; if Bobbin entered from Fleece's hut, he'll have reverse shadows
 only while standing to the left of the fence.

 Forge Sword Room (room 41): lines spoken by Mandible, the Foreman, and
 Edgewise have reverse shadows, but not Bobbin

 Crystalgard Shattered Graveyard (room 49): regular shadows until Goodmold
 dies, then adds reverse shadows. The reverse shadows don't appear if you
 skip the cutscene of Goodmold's death before it cuts away to the Great
 Scythe. Also, they go away if you leave and re-enter after his death.

 Loom Chamber, torn open (room 51): regular shadows except for Chaos'
 dialogue as Bobbin exits, which has reverse shadows

 I've included a ZIP file of screenshots that illustrate this behavior in
 the original interpreter.

--
-- 
Ticket URL: <https://bugs.scummvm.org/ticket/15030#comment:2>
ScummVM :: Bugs <https://bugs.scummvm.org>
ScummVM